Improvement in com position fuel



' To 'all'iohom' it may concern.- i

I WI LIAM lemma. and; county, State of California, have invent To makeour improved fuel-composition, we take coke and pulverize or gran ulateit, and- -thcn add-to every one hundred percent. of the pulverized cokethe following ingredients 1 UNITED s rl ms -J MEs A. MARS AND \VILLIAMIRELAN, JR-., OF'SAN rRAncIseo, CAL.

immovaiviznr m COMPOSITION FUEL.

Specification forming part of. Letters Be it known jthat we, J AMES'A.'MARS and Jr., of San Francisco city ed anf'linprovement inCon'ipos'ition Fuels; and

we do. hereby declare tl e-fiillowing' ilescri ptionsuflicientto enableany peisou skilled in the artor science to. which fit most nearly apperwtain's tomalc-e-and use our said invention o'rimprovement, withoutfurther invention or experiment.

I Our lnventnmirelates to a'i'iiinprovedfuel?" com"po'si tionj, which isespecially usefuljas-a substitute for charconl"a1id coke for metal m1-.gical and other purposes, where afuel free from sulphur and impuritiesis required.

Fire-clay, from five to temper cent; coal-tar or asphaltnm, from ten tofit'tcen'per celit salt,

glyeerine, water, from five to eight per cent.

The coal-tar or asphaltum and clay we beat to a temperature of at least212 Fahrenheit hel'ore .mixing'them with the, pulverized coke. After theingredients have'bee'n thoroughly mixed we form the mixture intoycakesof sufficient size to make, when pressed, blocks weighing from onetofour pounds, ,inore or less, and these cakes we subject to a pressureoffrom one to three thousaml tons, so asto'f provide blocks of greatsolidity. After the" blocks are pressed, we place 'them in'a hot' v coalis introduced.

By the -above-described means we provide a fuel-composition which isequal tocharcoal-for m etallurgicfal.purposes, being almost-pure car-'c'losed fi'irnace or retort, and allow thcm'to' Patent No. 154,701,dated September 1, 1374} appli ation filed June 18,1814.-

remain until most of the olatile portionsare evaporated. The blocks,when removed from the retort, will be found to be perfectly solid andfirm.

'NVe prefer to use a coke which is made from semi-bituminous coal in themanufacture of our fuel compound; andto coke this quality of coalsuccessfully we place it in a retort or oven, which is at a high heat atthe time the hon and entirely free froin' impurities. This fuel hasextraordinary burning; qualities, such as retaining'its solid form wheneX-.

posed'to great heat, and only disintegrating from the outside as itburns away.- 'It will also withstandthe blast from; the tuyeres in thefurnace'betterthau ordiuarycokc, as it, has greater solidity.

cut, is-'-- coke,'fire-i.-.lay, asph'altum, salt, glycerine, andwater,mix ed in about the proportions named and treated in the mannerset forth.

In witness whereof we hereunto set our hands andseals. v

JAMES A. MARS. [L. s. WM-. IRELAN, JR. [L. .S. Witnesses: v

JNo. L.Boonn,

O. M. Ricmmnsom :Having thus described our invention, what. we'claii'n,and desire to secure by Letters Pat

